Trolley for electric railways.



0V1 .GOYLE.

TROLLEY FOB. ELEGTRIC RAILWAYS.

. APPLICATION FILED NOV. 15, 1909. 960,829, Patented June 7, 1910.

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G. D. GOYLE.

' TROLLEY FOR ELECTRIC RAILWAYS.

APPLIOATION FILED NOV.15', 1909 960,829. Patented June 7, 1910.

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nrrnn sra'rns r CLARENCE D. COYLE, OF YOUNGSTOWN, OHIO.

TROLLEY FOB ELECTRIC RAILWAYS.

To all whom it may concern:

Be it known that I, CLARENCE D. CoYLE, a citizen of the United States,residing at Youngstown, in the county of Mahoning and State of Ohio,have invented certain new and useful Improvements in Trolleys forElectric Railways, of which the following is a specification.

This invention relates to the subject of trolleys for electric railways,and particularly to a novel and practical mounting for a trolley harp,whereby the trolley wheel is permitted to readily and freely adaptitself to the wire on curves and crossover switches with a minimumamount of wear on both the wheel and the wire, and without danger of thewheel leaving the wire.

A further object of the invention is to provide a swiveled trolley harpmounting which is entirely self-adjusting to the run of the wireregardless of the direction in which the pole is deflected from the lineof the wire. Also, the improved mounting involves means for normallyholding the trolley in a centered position with respect to a straightline of travel under spring tension, and to return the wheel to suchcentered position when swung to either side of the longitudinal plane ofthe pole.

Another general object of the invention is to provide a substantial andstrong mounting and bearing for the various parts of the swivelmounting.

The invention is susceptible to some structural modification withoutdeparting from the scope thereof, but a preferred and practicalembodiment is shown in the accompanying drawings, in which:

Figure 1 is a side elevation of a trolley harp mounting embodying thepresent invention. Fig. 2 is a top plan view thereof. Fig. 3 is avertical sectional view through the swivel bearing. Fig. 4 is an endview of the trolley harp mounting, showing one of the axle boxes insection.

Like references designate corresponding parts in the several figures ofthe drawings.

The improvements contemplated herein are fitted to a trolley pole 1 ofany of the conventional forms in use, and mounted on the car in theusual way. According to the present invention, this pole has threaded orotherwise suitably fitted to the upper end thereof, as at 2, an uprightrigid journal post 3 which may consist of a smoothed sec- Specificationof Letters Patent.

Application filed November 15, 1909.

Patented June '7, 1910.

Serial No. 528,154.

tion of piping, and upon the lower end part of the said post 3, there isthreaded or otherwise suitably fitted, as at a, a wide stationary lowerbearing plate 5 upon which is rotatably placed a revoluble upper bearingplate 6 preferably of the same form and dimensions as the stationaryplate 5.

The upper bearing plate 6 is rigidly mounted on the lower end of anelongated bearing sleeve 7 journaled on the stationary post 3 andextending nearly the full height of such post in order to provide anextended and substantial swivel hearing. The parts of this swivelbearing are retained in proper working position by means of a retainingnut or equivalent retaining device 8 detachably fitted on the upper endof the post 3, above the upper end of the sleeve 7.

The upper revoluble bearing plate 6 carries the wheel harp consisting ofthe opposite parallel angled side bearing supports 9, the lower arms ofwhich are screwed or otherwise fastened, as at 10, to the upper side ofthe plate 6, and the upper extremities of which supports preferably havethreaded thereon the collar or socket members 11 of the oppositehorizontally alined axle boxes 12. These axle boxes receive therein theends of the wheel axle 13 held in place by the set screws 14, and whichaxle has mounted thereon between said boxes a trolley wheel 15 of anyapproved construction.

Opposite coiled retracting or pull springs 16 are connected respectivelyto opposite sides of the wheel harp, as at 17, and to opposite sides ofthe retaining nut 8, as at 18. It will thus be seen that the arrangementof these springs is such as to normally hold the trolley wheel in acentered position with respect to a straight line of travel under springtension, and to return the wheel to such centered position when swung toeither side of the longitudinal plane of the pole.

The other advantages hereinbefore refered to will be apparent from theconstruction above described.

I claim:

1. In a trolley harp mounting, the pole carrying an upright rigidjournal post, a stationary bearing plate arranged at the lower end partof said post, a revoluble bearing plate having a slidable bearing on topof the stationary bearing plate, an up standing bearing sleeve fast tothe revoluble bearing plate and journaled on said post, a

Wheel harp made fast to the revoluble hearing plate, and oppositelyarranged centering springs connected with said harp.

2. In a trolley harp mounting, the pole carrying an upright rigidjournal post, a stationary bearing plate fitted to the lower end part ofsaid post, a revoluble bearing plate Working over the stationary bearingplate, a bearing sleeve fast to the revoluble bearing plate andjournaled 011 said post, a retaining device at the upper end of thepost, a Wheel harp made fast to the revoluble bearing plate, andoppositely arranged centering springs connected with opposite sides ofthe harp, and With the upper end 15 part of the journal post.

In testimony whereof I hereunto afiix my signature in the presence oftWo Witnesses.

CLARENCE D. OOYLE. Witnesses J. P. FRANCIS, J. H. HARVEY.

